Ring-spinning frame and spindle used therefor



(No Model.)

O. H. CHAPMAN.

RING SPINNING FRAME AND SPI NDLE USED THEREFOR.

Patented Feb. 15, 1887.

UNITED STATES PATENT OFFICE.

CHARLES H. CHAPMAN, OF GROTON, ASSIGNOR TO THE EUREKA SPINDLE COMPANY, OF AYER, MASSACHUSETTS.

RlNG-SP lNNlN G FRAME AND SPINDLE USED THEREFOR.

SPECIFICATION forming part of Letters Patent No. 357,903; dated February 15, 1887. Application filed December 24,1884. Serial No. 151,079. (No model.) latentcd in England March 19,1885, No. 3,561.

To all whom it may concern.- Be it known that 1, CHARLES H. CHAPMAN,

a citizen of the United States, and a resident of Groton, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in the Construction of Ring Spinning Frames and Spindles Used Therefor; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings.

The object of my invention is to provide a construction whereby the guideqvire now in use may be entirely omitted, and by extend- 1 ing the thread from the tip of the spindle directly back in a straight line to the front rolls the twist will be enabled to flow back to the rolls without restraint, and the thread will then receive its full twist at the instant that it is delivered in front of the rolls and before any perceptable strain shall be applied to it. The great advantages of thus twisting the thread are well known to every practical spinner. To accomplish these results I provide a spindle of usual construction,with the exception of the tip, which I make somewhat longer than usual and extend it upward through and above the bobbin to a point near the former position of the guide-wire. This elevation of the spindle-tip allows the thread to be drawn in a straight line from the bite of the front rolls to such tip without obstruction by any of the parts of the frame. In order that the tip of the spindle may engage the thread positively and force it to rotate and twist from that point, the tip is made in the form of a spiral fork in the manner hereinafter described. This rotation and twist may be obtained, in a more or less satisfactory degree, by other irregular forms of construction of the spindle-tip; but I have found by ex-' periment that the spiral fork gives the most positive and satisfactory results. In place of the guide-wire I hinge to the frame an adj ustable thread-guard which loosely encircles the spindle-tip and is left more or less open in front, as desired. The purpose of this threadguard is to support and confine the thread in proper relation to the spindle-tip, as will ap-,

5o pear hereinafter.

Referring to the accompanying drawings, Figure l is a sectional elevation of a portion of a ring-spinning frame, showing the relative position of the spindle, ring, and traveler, thread, thread'guard, and front rolls; Fig. 2, a top view of the thread-guard, spindle-tips, supporting-arms, supporting'rod, hand-lever, and thread board.

In Fig. 1 it will be seen thatthe spindle A extends upward through and above the bob- 6o bin and enters the opening 0 in the threadguard B, which loosely encircles the tip, but does not touch it. The lower walls of the opening 0 flare outwardly, so as to give the threadguard a funnel-like opening, 0, for facilit-ating the entrance and centering of the spindle-tip. The tip of the spindle is centrally drilled, as shown at a, Fig. 2, downward about one-half an inch, forming the tip into a tube. The walls of this tube are then out or opened through to the hollow center by one or more spiral slots, 1), such slots beginning at a point below the thread-guard and being carried backward in relation to the direction of rotation and upward in a spiral or diagonal course and 7 5 emerging at the top of the hollow tip at about a quarter-turn backward from the line of the starting-point. The rear or under lip, r, of such slotis then gradually cut away and curved backward as it approaches the top, giving the 8 side or lip 7' an easy rolling curve or cam shape. Should the direction of rotation be reversed, as in twisting, the spiral course of the slots and the form of the threadguard would be correspondingly reversed. The guard 8 5 I B is adjustably attached to the supporting-arm O by means of the screws c. The arm 0 is hinged on the horizontal supporting-rod E, and may be thrown back for the purpose of doffing. The rod E extends across the entire side of the frame, to which it may be attached by any convenient means, and may be rotated by means of the hand-lever D, attached to the end of the rod. A pin or stud, 6, projects from the rod between alternate supporting-arms, 5 and when the rod is rotated backward the pin engages the shoulders t t, formed on the adjacent ends of the arms 0 O, and the arms and thread-guards are rotated back with the rod. When the rod is rotated forward again, the 1 0 pin 6 engages the shoulder t and the arms and guards are returned to their normal position. A tail-piece, z, is formed on the back of the arm 0, and projects backward under the finger-board f, and between such tail-piece and board is placed the circular cam-shaped rest or stop h, attached .to the under side of the board by the screw s. The tail-piece presses upward against the rest, which acts as a stop, and the rest being thicker on one side than the other, as shown in Fig. 1, the guard B may be elevated or depressed by the rotation of the rest on the screw, and the guard thus adjusted to the spin dle-tip.

In Fig. 2 the guards B B represent two variations in the open front of the guard. I regard that shown at B as preferable, however, as it admits the thread more freely when piecing up.

In operation the thread is delivered to the spindletip by the thread guard and is instantly engaged by theforked or spiral form of such tip and carried positively with the spindle and forced to rotate and twist from the tip. At the same time it is passing downward and emerging from one of the spiral slots and passing to the traveler, which it engages in the usual manner. As the traveler falls backward on the ring to wind, it gradually fallsbehind the line of the slot above, from which the thread is emerging, until it finally draws the thread entirely out of such slot, as shown by r the dotted line 10. It is then caught by the thread-guard and supported and kept up for the instant, or until the rear or under lip of the next succeeding slot, as the spindle rotates, passes under and behind the thread, and lifting it up, rolls it into such succeeding slot; and the thread has thus fallen one-half a revolution behind the spindle-tip, in harmony with the falling back of the traveler below, and has not become wound around the tip by such falling back of the traveler. 'Ihetraveleris thus able to automatically regulate and control the position of the thread at the tip at all timesin harmony with its own position on the ring. It is to facilitate this change in the position of the thread that the slots are made in a backward spiral form, the rear or under lip being curved orrolled back, as described, in order that it may more easily pass under and behind the thread when outsidethe slots, which it must do in order to return the thread into the succeeding slot, as otherwise the thread, instead of being taken up by the spindle-tip, would remain in the position of the dotted line w, and the onward movement of the traveler would wind the thread around the spindle below the tip and obstruct the winding of the traveler until the increasing strain caused construction of the threadguard, provided with the short arm or point extending forward past the side. of the spindle at the right, as shownin Fig. 2, constitutes another important feature of my improvement, as it serves to confine the thread and prevent it from swelling too far away when drawn out of theslot, as described. If not so confined, the swell would carry it out so far from the spindle-tip that it would not return in season to be taken up by the next succeeding slot, and would therefore lose one or more turns,and fall back in excess of the traveler and become wound around the spindle and soon broken.

Having thus described my invention, what I claim is i 1. A spindle constructed to extend upward through and above the bobbin, and having its tip provided with one or more slots formed through the walls thereof, combined with an adjustable thread-guard interposed between the front rolls and the said tip, and adapted to direct and retain the thread in proper relation therewith, as set forth.

2. The combination, with a ring and traveler,of a spindle constructed to extend upward through and above the bobbin and having a tubular tip,the walls of which are cut through and opened by one or more spiral slots, substantially-as set forth.

3. A spindle-constructed to extend upward through and above the bobbin, and having its tip provided with one or more spiral slots formed through the walls of such tip, combined with an adjustable thread-guard having a projecting arm or point extending forward past the side of the spindle-tip to restrain the swell of the thread, as described.

4. A spindle constructed to extend upward through and above the bobbin, combined with a hinged thread-guard, into an opening in which the tip of such spindle projects,the said thread-guard opening having the funnel-like under surface, 0, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES H GHAPMAN. Witnesses:

WARREN H. ATWOOD, JAMES R. GRAY.

IOC

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